Finding Arc Length and Sector Area Radians

In a​ circle, a 90° sector has area 64π in². What is the radius of the​ circle?

• 16 in

• 32 in

• 64 in

• 128 in

Tags

CCSS.HSG.C.B.5

Find the area of the shaded sector of circle O.  The radius is 6 inches and the central angle is 100°.  Express answer to the nearest tenth of a square inch.

• 9.2 sq. in.

• 10.5 sq. in.

• 31.4 sq. in.

• 38.2 sq. in.

Tags

CCSS.HSG.C.B.5

FIND THE SECTOR AREA OUTLINED IN BOLD

• A

• B

• C

• D

Tags

CCSS.HSG.C.B.5

What is the area of the shaded region? Round to the nearest hundredth.

• 26

• 452.39

• 113.10

• 40715.04

Tags

CCSS.HSG.C.B.5

Alison is jogging on a circular track that has a radius of 140 feet.  She runs along the track from point R to point N, a distance of 230 feet. Find to the nearest degree, the measure of minor arc RN.

• 47

• 74

• 94

• 123

Tags

CCSS.HSG.C.B.5

The distance along an arc in linear units.

• area of a sector

• arc length

• arc measure

• segment of a circle

Tags

CCSS.HSG.C.A.2

In circle O, the radius is 4, and the measure of minor arc AB is 120 degrees. Find the length of minor arc AB to the nearest integer.

• 9.2 units

• 8.8 units

• 8.4 units

• 8.1 units

Tags

CCSS.HSG.C.B.5

Find the area of each sector.

• 6.4 m²

• 7.9 m²

• 9.8 m²

• 11.8 m²

Tags

CCSS.HSG.C.B.5

What is the ϴ called?

• sector

• arc length

• arc measure

• central angle

Tags

CCSS.HSG.C.A.2

Find the arc length of arc AB.

• 12.57 units

• 75.40 units

• 24 units

• 125.66 units

Tags

CCSS.HSG.C.B.5